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| Terms for subject Environment (6671 entries) |
| ötvözet | alloy (Any of a large number of substances having metallic properties and consisting of two or more elements; with few exceptions, the components are usually metallic elements) | |
| oxid | oxide (Binary chemical compound in which oxygen is combined with a metal or nonmetal) | |
| oxidálható anyag | oxidizable material (Substance that can undergo a chemical reaction with oxygen) | |
| oxigén | oxygen (A gaseous chemical element; an essential element in cellular respiration and in combustion processes; the most abundant element in the earth's crust and about 20% of the air by volume) | |
| oxigén nélküli (anaerob) állapot | anaerobic condition (A mode of life carried on in the absence of molecular oxygen) | |
| oxigén nélküli (anaerob) folyamat | anaerobic process (A process from which air or oxygen not in chemical combination is excluded) | |
| oxigéndúsítás | oxygenation (Treating with oxygen) | |
| oxigénhiány | oxygen deficiency (No definition needed) | |
| oxigénigényes kezelés | aerobic treatment (The introduction of air into sewage so as to provide aerobic biochemical stabilization during a detention period) | |
| oxigénmentes kezelés | anaerobic treatment (Breakdown of organic material without the presence of oxygen, a treatment which permanently removes the unpleasant odour of many organic wastes so that they can be used on agricultural land) | |
| oxigéntartalom | oxygen content (Amount of oxygen contained in a solution) | |
| őz | deer (The common name for 41 species of even-toed ungulates that compose the family Cervidae in the order Artiodactyla; males have antlers) | |
| ozmózis | osmosis (The passage of a solvent through a semipermeable membrane separating two solutions of different concentrations. A semipermeable membrane is one through which the molecules of a solvent can pass but the molecules of most solutes cannot. There is a thermodynamic tendency for solutions separated by such a membrane to become equal in concentration, the water (or other solvent) flowing from the weaker to the stronger solution. Osmosis will stop when the two solutions reach equal concentration, and can also be stopped by applying a pressure to the liquid on the stronger-solution side of the membrane. The pressure required to stop the flow from a pure solvent into a solution is a characteristic of the solution, and is called the osmotic pressure. Osmotic pressure depends only on the concentration of particles in the solution, not on their nature) | |
| ózon | ozone (An allotropic form of oxygen containing three atoms in the molecule. It is a bluish gas, very active chemically, and a powerful oxidizing agent. Ozone is formed when oxygen or air is subjected to a silent electric discharge. It occurs in ordinary air in very small amounts only) | |
| ózonizálás | ozonization (The process of treating, impregnating or combining with ozone) | |
| ózonkárosító anyag | ozone killer | |
| ózonkárosító anyag | ozone-depleting substance | |
| ózonkárosító anyag | substance that depletes the ozone layer | |
| ózonréteg | ozone layer (The general stratum of the upper atmosphere in which there is an appreciable ozone concentration and in which ozone plays an important part in the radiative balance of the atmosphere) | |
| ózonréteg elvékonyodása | ozone layer depletion (The fragile shield of ozone is been damaged by chemicals released on earth. The main chemicals that are depleting stratospheric ozone are chlorofluorocarbons which are used in refrigerators, aerosols, and as cleaners in many industries, and halons, which are used in fire extinguishers. The damage is caused when these chemicals release highly reactive forms of chlorine and bromine. Over the past 30 years ozone levels over parts of Antarctica have dropped by almost 40% during some months and a "hole" in ozone concentrations is clearly visible in satellite observations) |